UFC 3-270-04
15 March 2001
the entire slab to be replaced. Successful installation of load-transfer devices requires sound
concrete adjacent to the joint or crack. If the concrete near the joint or crack is significantly
deteriorated, full-depth repair should be placed (with provisions for load transfer) in lieu of
load-transfer devices. Additional work that must be performed prior to load-transfer restoration
may include:
10.3.1. Subsealing (essential if loss of support exists) to fill voids in the pavement structure and
to restore to the pavement slabs.
10.3.2. Full-depth and spall repairs to replace highly distressed joints and slabs with corner
breaks, "D" cracking, etc.
existing joint or cracks have been used: dowels and proprietary shear devices. Short-term
experience indicates that both methods can be effective in transferring loads across joints and
cracks. The important functions of load-transfer devices in concrete pavements are to help
maintain alignment of adjoining slabs and to limit or reduce stresses resulting from loads on the
pavement.
10.4.1. Dowels. Different sizes of dowels should be specified for different thicknesses of
pavements. Dowel size and spacing for construction, contraction, and expansion joints are
shown in Table 10.1.
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